Original Sentence:
A recent poll showed that people working in white-collar industries consider themselves no more financially secure than do people working in blue-collar industries.
Let's evaluate the options:
(A) "no more financially secure than do people working"
* This seems to be clear, concise, and grammatically correct comparison between the financial security of people working in white-collar industries and those working in blue-collar
industries. "Do" is used here to avoid repeating the verb "consider". So it seems to be correct
(let's keep this option for now)
(B) "not any more financially secure than do people working"
* This is also grammatically correct but sounds a bit awkward. "Not any more" is a less elegant way of expressing the idea than "no more".
(can be eliminated, but let's keep)
(C) "not any more financially secure than do people who work"
* Similar to (B), "not any more" is a bit awkward, and the addition of "who work" adds unnecessary length to the sentence.
(eliminate)
(D) "no more financially secure than are people who are working
* The use of "are" in this case is unnecessary and makes the sentence awkward. I will eliminate this. Than are people who are working (no, awkward)
(eliminate)
(E) "not as financially secure as are people who work"
* I think this changes the meaning of the sentence. This suggests that people working in white-collar industries consider themselves less financially secure.
(eliminate)
Between A and B, I will go with
option A as it sounds more concise.